硅氢加成制备主链型液晶聚合物  

Preparation of main-chain liquid crystal polymers by silica-hydrogen addition

作　　者：朱鹏 陈权[1] 陈有慧 Zhu Peng;Chen Quan;Chen Youhui(College of Chemical and Pharmaceutics Engineering,Henan University of Science and Technology,Luoyang 471023)

机构地区：[1]河南科技大学化工与制药学院,洛阳471023

出　　处：《化工新型材料》2023年第11期186-189,共4页New Chemical Materials

基　　金：河南省高等学校重点科研项目计划(17A430016)。

摘　　要：自制了含3个苯环的液晶基元,通过硅氢加成,以氢封端的聚硅氧烷为扩链剂制备出主链型液晶聚合物,并且对所得聚合物进行核磁氢谱(1H-NMR)、差示量热(DSC)、红外光谱(FT-IR)、偏光显微镜(POM)等表征。单体以及聚合物的核磁表明,已经制备出较为纯净的液晶基元单体以及聚合物,FT-IR测试结果表明对应的结构进一步证实了与预期结果相符,对单体以及聚合物的DSC以及结合POM的结果表明单体和硅氢加成后的聚合物都具有良好的液晶性,表明了分子设计的合理性,为合成主链型液晶聚合物提供一些经验基础。Liquid crystal substrates containing three benzene rings were prepared,and then the main-chain liquid crystal polymers were synthesized by silica-hydrogen addition utilizing hydrogen-capped polysiloxane as chain expander.The obtained polymers were characterized by 1H-NMR,DSC,FTIR,and POM.The NMR of the monomer and polymer demonstrated that the relatively pure liquid crystal substrate monomers and polymers had been prepared.The FT-IR test results showed that the corresponding structures further confirmed the expected results.The DSC and POM results for monomer and polymer indicated that the monomer and the polymer after silica-hydrogen addition had good liquid crystallinity,which validated the rationality of the molecular design and provided some empirical basis for the synthesis of main-chain liquid crystalline polymers.

关 键 词：液晶聚合物 主链型 硅氢加成 液晶基元 

分 类 号：O631.21[理学—高分子化学]